Surly made a couple bike you could put fat tires on - their touring bike and a cyclocross bike. I don’t know if they’re still available but they were selling them in the mid-2000s
Many touring/adventure bikes will double as way better commuter than a road bike I feel. They are set up for comfort, long hours in the saddle, and usually have with luggage mounts.
I ride 40mm tires on my Long Haul Trucker.